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Groundwater Properties
Published in Mohammad Karamouz, Azadeh Ahmadi, Masih Akhbari, Groundwater Hydrology, 2020
Mohammad Karamouz, Azadeh Ahmadi, Masih Akhbari
Limestones are mostly composed of the mineral calcium carbonate (CaCO3). Dolomites are composed of the mineral dolomite, which is a dual carbonate salt of calcium and magnesium. The chemical composition of dolomite is expressed as CaMg(CO3)2.
Rocks and rock minerals
Published in Ivan Gratchev, Rock Mechanics Through Project-Based Learning, 2019
Limestone can have either clastic or crystalline textures, and its color can vary from white to gray or black. As limestone is relatively soluble, solution cavities in such rocks (karst topography) may be abundant (Figure 4.5). It is noted that limestone has a wide use in construction; it is the basic ingredient in the manufacturing of cement and lime.
Groundwater environments
Published in Ian Acworth, Investigating Groundwater, 2019
Limestone is a sedimentary rock composed largely of the mineral calcite (calcium carbonate: CaCO3). Limestone often contains variable amounts of silica in the form of chert or flint, as well as varying amounts of clay, silt and sand as disseminations, nodules or layers within the rock. Limestone can be recognized in the field by its reaction with hydrochloric acid. A few drops of acid will cause the limestone to fizz with the release of CO2. Micrite or microcrystalline carbonate is by far the most common constituent in carbonate rocks. The individual crystals in ancient rocks are < 5 μm in diameter and are now commonly calcite. In modern carbonates, the mud is composed of individual crystals of aragonite and are needle-like in shape.
Investigation on the morphological and mineralogical properties of coarse aggregates under VSI crushing operation
Published in International Journal of Pavement Engineering, 2021
Chonghui Wang, Hainian Wang, Markus Oeser, Mohd Rosli Mohd Hasan
Three different types of particles, namely, granite aggregates originated from Fujian, diabase aggregates originated from Guangdong, and limestone aggregates from Guangxi were chosen for this study, as depicted in Figure 2, since they are commonly used as construction materials in China for pavement engineering. Granite is one typical intrusive igneous grain which mainly consists of quartz, feldspar, chlorite, and biotite. Diabase is determined as subvolcanic rock or shallow intrusive rock, which equivalent to plutonic gabbro. Limestone is one sort of sedimentary rocks which mainly developed by skeletal fragments of marine creatures, and like other sedimentary rocks, limestone dominantly composed of calcium carbonate. Polishing stone value measurements revealed that the PSV of granite is 57, and that of diabase and limestone is 61 and 32, respectively.
An overview of alternative raw materials used in cement and clinker manufacturing
Published in International Journal of Sustainable Engineering, 2021
Sabah Ahmed Abdul-Wahab, Hilal Al-Dhamri, Ganesh Ram, Vishnu P. Chatterjee
Various types of cement have been introduced in the recent past by cement technologists the world over (Table 2). The majority of these cements were developed by the addition of alternative waste (also known as SCM, supplementary cementitious materials) produced by other industries. Fly ash and various slags produced by metal industries are the two most significant components (ASTM C595/C595M-16. 2003. ASTM C595-03 ; EN 197-1. 2011). Additionally, limestone has been used as a component of cement. These additives were added independently as well as in combination in permissible percentages in the cement mixture along with clinker. Fly ash and GGBS slag were added in cement grinding to produce PPC and PSC cement. However, the combination of clinker, fly ash, and slag along with gypsum is used in cement grinding.
Predicting mechanical properties and ultimate shear strength of gypsum, limestone and sandstone rocks using Vipulanandan models
Published in Geomechanics and Geoengineering, 2020
Wael Mahmood, Ahmed Mohammed, Saman HamaHussein
Limestone is another sedimentary rock, composed mainly of skeletal fragments of marine organisms such as coral, forams and mollusks. Its major materials are the minerals calcite, and aragonite, which are different crystal forms of calcium carbonate (CaCO3) (Rahmouni et al. 2013). Its major materials are the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3) (Milliman et al. 2012). The limestone was popular as a building stone because of its regional availability, its mechanical properties, and its attractive appearance, and was used in many types of buildings. Also, limestone has been used in many kinds of constructions such as concrete aggregate, asphalt pavement aggregate, asphalt surface treatments, road base, structural fill, railroad ballast, riprap and drainage and erosion control (Bednarik et al. 2014).